An ultrasonic water meter with leakage detection function

Abstract

This invention relates to the field of water flow detection technology, specifically to an ultrasonic water meter with leakage detection function. It includes an installation box, a detection box, and a protective cylinder. When detecting the water flow rate in a water pipe, the protective cylinders inside the two detection boxes are in a state of blocking the two first detection ports. Based on the position settings of the two first detection ports, an ultrasonic sensor inside one protective cylinder emits an ultrasonic signal that can be received by an ultrasonic sensor inside the other protective cylinder. In the water flow direction inside the pipe, the upstream and downstream ultrasonic signals form a certain time difference during transmission. Given a calibrated pipe diameter and cross-sectional area and a standard measuring pipe length, the water flow rate can be calculated by a computing chip. Therefore, during the water flow detection process, the water in the pipe does not directly contact the ultrasonic sensor, thereby reducing the impact of the water flow on the ultrasonic sensor and lowering the probability of damage to the ultrasonic sensor.

Description

Technical Field

[0001] This invention relates to the field of water flow detection technology, and specifically to an ultrasonic water meter with leakage detection function. Background Technology

[0002] In the field of water resource metering, ultrasonic water meters are an advanced metering device. In practical use, two ultrasonic sensors are installed at an angle. The first ultrasonic sensor emits an ultrasonic signal to the second ultrasonic sensor, and then the second ultrasonic sensor emits an ultrasonic signal back to the first ultrasonic sensor. One ultrasonic signal is a downstream signal, and the other is a upstream signal. The downstream and upstream ultrasonic signals form a certain time difference during transmission. Under the conditions of calibrated pipe cross-sectional area and standard measuring pipe length, the water flow rate can be calculated by a computing chip.

[0003] During fluid flow, ultrasonic sensors are subjected to continuous impact from the fluid, resulting in mechanical stress. Over time, this mechanical stress can adversely affect the sensor's performance. It may cause minute deformation or displacement of the precision components inside the sensor, thereby affecting the sensor's accuracy in detecting and processing water flow signals, and causing the water meter's detection accuracy to gradually decrease. Summary of the Invention

[0004] This invention provides an ultrasonic water meter with leakage detection function to solve the problem of low detection accuracy of existing ultrasonic water meters.

[0005] The ultrasonic water meter with leakage detection function of the present invention adopts the following technical solution:

[0006] An ultrasonic water meter with leakage detection function includes a mounting box, a detection box, and a protective sleeve.

[0007] The mounting box is fitted onto the outside of the water pipe. The interior of the mounting box is hollow, and the water pipe can divide the interior of the mounting box into two relatively isolated mounting cavities. There are two first detection ports on the water pipe that connect the interior of the water pipe and the two mounting cavities. The two first detection ports are spaced apart by a preset distance in the direction of water flow inside the water pipe. There are two detection boxes, each set inside one mounting cavity. The inside of each detection box has a detection cavity, and the side wall of the detection box has a second detection port that connects the detection cavity and the mounting cavity. The second detection port is set corresponding to the first detection port. A protective cylinder is set in the detection cavity. The side wall of the protective cylinder can deform. When the side wall of the protective cylinder deforms, it can block the first detection port through the second detection port. An ultrasonic sensor is installed inside the protective cylinder.

[0008] Furthermore, the protective cylinder includes a first end cap, a second end cap, and a first side plate. The second end cap is fixedly connected to the inner side wall of the testing chamber, the first side plate is fixedly connected to the first end cap, and the first side plate is rotatably connected to the second end cap. The ultrasonic sensor is installed on the second end cap. The first side plate is made of an elastic and deformable material.

[0009] Furthermore, the side wall of the testing box is provided with an auxiliary testing port that connects the testing cavity and the mounting cavity. The testing box is rotatably mounted in the mounting cavity. An auxiliary cylinder is installed inside the testing cavity, and an ultrasonic sensor is installed inside the auxiliary cylinder. The side wall of the auxiliary cylinder can deform. When the ultrasonic sensor inside the protective cylinder malfunctions, the testing box rotates by a preset angle, and the auxiliary testing port on the testing box can correspond to the first testing port.

[0010] Furthermore, the auxiliary cylinder includes a third end cap, a fourth end cap, and a second side plate. The fourth end cap is fixedly connected to the inner side wall of the detection chamber, the second side plate is fixedly connected to the third end cap, and the second side plate is rotatably connected to the fourth end cap. The ultrasonic sensor is installed on the fourth end cap. The second side plate is made of an elastic and deformable material.

[0011] Furthermore, a regulating pump is installed inside the detection chamber to adjust the air pressure inside the protective cylinder and the auxiliary cylinder.

[0012] Furthermore, a sealing plate is installed on the water pipe, which is used to block the first detection port when the detection box rotates.

[0013] Furthermore, a limiting component is provided inside the mounting box to restrict the rotation of the testing box within the mounting cavity.

[0014] Furthermore, the limiting component includes a limiting ring and multiple limiting grooves. The multiple limiting grooves are disposed on the peripheral side wall of the detection box. An eccentric shaft is rotatably disposed on the limiting ring. The axis of the eccentric shaft is parallel to the axis of the limiting ring. The eccentric shaft is fixedly connected to the inner side wall of the mounting box. A limiting block is disposed on the limiting ring. The limiting block can enter the limiting groove.

[0015] Furthermore, a sealing ring is installed at the first detection port.

[0016] Furthermore, a buffer airbag is installed inside the detection chamber, and a guide tube is installed on the mounting box. One end of the guide tube is in contact with the buffer airbag, and the guide tube is always connected to the inside of the water pipe.

[0017] The beneficial effects of this invention are as follows: An ultrasonic water meter with leakage detection function includes an installation box, a detection box, and a protective cylinder. When it is necessary to detect the liquid flow rate in a water pipe, the installation box is installed on the outside of the water pipe, the detection box is installed inside the installation cavity, and the protective cylinder is installed inside the detection cavity. The protective cylinder blocks the first detection port through the second detection port, preventing water from entering the installation cavity through the first and second detection ports. When detecting the water flow rate in the water pipe, the protective cylinders inside the two detection boxes are in a state of blocking the two first detection ports. Based on the position settings of the two first detection ports, the ultrasonic sensor inside one protective cylinder emits an ultrasonic signal that can be received by the ultrasonic sensor inside the other protective cylinder. In the direction of water flow inside the water pipe, the ultrasonic signals flowing in and out of the direction of flow form a certain time difference during transmission. Under the conditions of a calibrated pipe diameter and cross-sectional area and a standard measuring pipe length, the water flow rate can be calculated by a calculation chip. Therefore, during the detection of water flow rate, the water in the water pipe does not directly contact the ultrasonic sensor, thereby reducing the impact of water flow on the ultrasonic sensor and reducing the probability of damage to the ultrasonic sensor.

[0018] Furthermore, since the water flow inside the pipe can directly contact the outer wall of the protective cylinder, the position where the first side plate of the protective cylinder contacts the water is prone to damage after the ultrasonic sensor has been running for a period of time. By rotating the first end cap of the protective cylinder, the position where the first side plate of the protective cylinder contacts the water can be changed, thereby extending the life of the protective cylinder and reducing the frequency of maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of an ultrasonic water meter with leakage detection function installed on a water pipe, provided by an embodiment of the present invention;

[0021] Figure 2 An exploded view of the water pipe, installation box, and detection box in an ultrasonic water meter with leakage detection function provided in an embodiment of the present invention;

[0022] Figure 3 An exploded view of the detection box and internal structure of an ultrasonic water meter with leakage detection function provided in an embodiment of the present invention;

[0023] Figure 4A front view of an ultrasonic water meter with leakage detection function installed on a water pipe, provided by an embodiment of the present invention;

[0024] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0025] Figure 6 for Figure 4 Cross-sectional view along the BB direction;

[0026] Figure 7 for Figure 4 A cross-sectional view along the CC direction;

[0027] Figure 8 for Figure 6 A magnified view of the first side plate of the protective cylinder at point D when it is in a deformed state;

[0028] Figure 9 This is a partial structural diagram of the mounting box of an ultrasonic water meter with leakage detection function, provided as an embodiment of the present invention.

[0029] In the diagram: 110, mounting box; 111, mounting cavity; 120, first detection port; 130, detection box; 140, second detection port; 150, protective cylinder; 151, first end cap; 152, second end cap; 153, first side plate; 160, ultrasonic sensor; 170, auxiliary detection port; 180, auxiliary cylinder; 190, water pipe; 210, regulating pump; 220, sealing plate; 230, limiting ring; 240, limiting block; 250, sealing ring; 260, buffer airbag; 270, guide pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] like Figures 1 to 9 As shown in the figure, an ultrasonic water meter with leakage detection function provided in this embodiment of the invention includes an installation box 110, a detection box 130 and a protective cylinder 150.

[0034] The mounting box 110 is fitted over the water pipe 190. The interior of the mounting box 110 is hollow, and the water pipe 190 divides the interior of the mounting box 110 into two relatively isolated mounting cavities 111, which are located on opposite sides of the water pipe 190 along its axial direction. The water pipe 190 has two first detection ports 120 that connect the interior of the water pipe 190 to the two mounting cavities 111. Specifically, each first detection port 120 connects one mounting cavity 111 to the water pipe 190. Water flows along the axial direction of the water pipe 190. A certain distance exists between the two first detection ports 120. Furthermore, the line connecting the two first detection ports 120 forms a preset angle with the axial direction of the water pipe 190.

[0035] Two testing boxes 130 are provided, each testing box 130 is set in an installation cavity 111. The interior of the testing box 130 is hollow, and the hollow cavity inside the testing box 130 is a testing cavity. The side wall of the testing box 130 is provided with a second testing port 140 that connects the testing cavity and the installation cavity 111. The second testing port 140 is set in correspondence with the first testing port 120. After the testing box 130 is installed in the installation cavity 111, the first testing port 120 and the second testing port 140 are in a connected state.

[0036] A protective cylinder 150 is installed in the detection chamber. After installation, the protective cylinder 150 is close to the second detection port 140. The peripheral wall of the protective cylinder 150 can deform, and the internal chamber of the protective cylinder 150 is in a relatively sealed state. When the air pressure inside the protective cylinder 150 increases, the peripheral wall of the protective cylinder 150 can deform. When the peripheral wall of the protective cylinder 150 deforms, it can block the first detection port 120 through the second detection port 140. Under the action of the peripheral wall of the protective cylinder 150, water inside the water pipe 190 is prevented from leaving the water pipe 190 through the first detection port 120. When the peripheral wall of the protective cylinder 150 blocks the first detection port 120, part of the peripheral wall of the protective cylinder 150 enters the water pipe 190 through the first detection port 120. An ultrasonic sensor 160 is installed inside the protective cylinder 150. The ultrasonic signal emitted by the ultrasonic sensor 160 can pass through the protective cylinder 150. Furthermore, the two detection boxes 130 are divided into a first box and a second box. When the ultrasonic sensor 160 inside the first box emits an ultrasonic signal, the ultrasonic sensor 160 inside the second box can receive the ultrasonic signal. Simultaneously, when the ultrasonic sensor 160 inside the second box emits an ultrasonic signal, the ultrasonic sensor 160 inside the first box can receive the ultrasonic signal. At this time, the path of the ultrasonic signal forms an angle with the axis of the water pipe 190. Combined with the water flow direction inside the water pipe 190, the water flow rate is calculated. Furthermore, by setting up a protective sleeve 150, direct water contact with the ultrasonic sensor 160 is prevented, reducing the impact of water flow on the ultrasonic sensor 160 and lowering the probability of damage to the ultrasonic sensor 160.

[0037] An ultrasonic water meter with leakage detection function of the present invention, when it is necessary to detect the liquid flow rate in a water pipe 190, installs a mounting box 110 on the outside of the water pipe 190, installs a detection box 130 in a mounting cavity 111, and installs a protective cylinder 150 in the detection cavity. The protective cylinder 150 blocks the first detection port 120 through the second detection port 140 to prevent water from flowing into the mounting cavity 111 through the first detection port 120 and the second detection port 140. When detecting the water flow rate in the water pipe 190, the protective cylinders 150 inside the two detection boxes 130 are in a state of blocking the two first detection ports 120. According to the two first detection ports 140, the water meter detects the leakage flow rate in the water pipe 190. With the position of the detection port 120 set, the ultrasonic sensor 160 inside one of the protective cylinders 150 emits an ultrasonic signal that can be received by the ultrasonic sensor 160 inside the other protective cylinder 150. In the water flow direction inside the water pipe 190, the ultrasonic signals flowing in and out of the direction of flow form a certain time difference during transmission. Under the conditions of the calibrated pipe diameter and cross-sectional area and the standard measuring pipe length, the water flow rate can be calculated by the calculation chip. Therefore, during the detection of water flow rate, the water inside the water pipe 190 does not directly contact the ultrasonic sensor 160, thereby reducing the impact of water flow on the ultrasonic sensor 160 and reducing the probability of damage to the ultrasonic sensor 160.

[0038] The protective cylinder 150 includes a first end cap 151, a second end cap 152, and a first side plate 153. The second end cap 152 is fixedly connected to the inner wall of the detection box 130. The first side plate 153 is fixedly connected to the first end cap 151 and rotatably connected to the second end cap 152. Furthermore, the first end cap 151 and the second end cap 152 are spaced apart vertically. The second end cap 152 is located below the first end cap 151 and is detachably installed on the lower end face inside the detection box 130. By fixing the first end cap 151 to the first side plate 153 and rotatably connecting the first side plate 153 to the second end cap 152, the position of the first side plate 153 in contact with the water flow inside the water pipe 190 can be changed. The ultrasonic sensor 160 is mounted on the second end cap 152. The first side plate 153 is made of an elastic and deformable material. When gas is supplied into the protective cylinder 150, the internal air pressure increases, causing the first side plate 153 to deform, thereby sealing the first detection port 120. Furthermore, when the first side plate 153 of the protective cylinder 150 seals the first detection port 120, the water flow inside the water pipe 190 impacts the first side plate 153. After the ultrasonic sensor 160 has been running for a period of time, the position of the first side plate 153 in contact with water is prone to damage. By rotating the first end cap 151 of the protective cylinder 150, the position of the first side plate 153 in contact with water is changed, thereby extending the lifespan of the protective cylinder 150 and reducing the frequency of maintenance.

[0039] In one embodiment, the side wall of the detection box 130 is provided with an auxiliary detection port 170 that connects the detection cavity and the mounting cavity 111. The size of the auxiliary detection port 170 is the same as that of the second detection port 140. The auxiliary detection port 170 and the second detection port 140 are evenly distributed in the circumferential direction of the detection box 130. The detection box 130 is rotatably mounted in the mounting cavity 111. When the detection box 130 rotates, the positions of the auxiliary detection port 170 and the second detection port 140 can be interchanged. An auxiliary cylinder 180 is installed inside the detection chamber, positioned close to the auxiliary detection port 170. An ultrasonic sensor 160 is installed inside the auxiliary cylinder 180. The peripheral wall of the auxiliary cylinder 180 is deformable, and its outer contour is the same as that of the protective cylinder 150. After the detection box 130 rotates by a preset angle, the auxiliary detection port 170 changes to the original position of the second detection port 140. At this time, the auxiliary detection port 170 and the first detection port 120 are in a corresponding state, and the auxiliary cylinder 180 can take over the function of the protective cylinder 150. After the peripheral wall of the auxiliary cylinder 180 deforms, it blocks the first detection port 120 through the auxiliary detection port 170. The ultrasonic sensor 160 inside the auxiliary cylinder 180 will continue to perform the function of detecting water flow. Furthermore, when the ultrasonic sensor 160 inside the protective cylinder 150 malfunctions, it cannot perform the function of detecting water flow. In this case, the detection box 130 is driven to rotate by a preset angle, aligning the auxiliary detection port 170 on the detection box 130 with the first detection port 120. The auxiliary cylinder 180 inside the detection box 130 replaces the protective cylinder 150, thereby reducing maintenance time and improving the accuracy of water flow detection. Furthermore, while the ultrasonic sensor 160 inside the auxiliary cylinder 180 is operating, maintenance is performed on the ultrasonic sensor 160 inside the protective cylinder 150.

[0040] In one embodiment, the auxiliary cylinder 180 includes a third end cap, a fourth end cap, and a second side plate. The fourth end cap is fixedly connected to the inner wall of the detection box 130, and the second side plate is fixedly connected to the third end cap and rotatably connected to the fourth end cap. Further, the third and fourth end caps are spaced vertically apart, with the fourth end cap positioned below the third end cap. The fourth end cap is detachably installed on the lower end face inside the detection box 130. By fixing the third end cap to the second side plate and rotatably connecting the second side plate to the fourth end cap, the position of the second side plate in contact with the water flow inside the water pipe 190 can be changed. The ultrasonic sensor 160 is mounted on the fourth end cap. The second side plate is made of an elastic, deformable material, and is made of the same material as the first side plate 153. When gas is supplied into the auxiliary cylinder 180, the gas pressure inside the auxiliary cylinder 180 increases, causing the second side plate of the auxiliary cylinder 180 to deform, thereby achieving the sealing of the first detection port 120 using the second side plate. Furthermore, when the second side plate of the auxiliary cylinder 180 blocks the first detection port 120, the water flow inside the water pipe 190 will impact the second side plate. After the ultrasonic sensor 160 has been running for a period of time, the position where the second side plate of the auxiliary cylinder 180 contacts the water is prone to damage. By rotating the third end cap of the auxiliary cylinder 180, the position where the second side plate of the auxiliary cylinder 180 contacts the water is changed, thereby extending the life of the auxiliary cylinder 180 and reducing the frequency of maintenance.

[0041] In one embodiment, a regulating pump 210 is provided inside the detection chamber. The regulating pump 210 is used to adjust the air pressure inside the protective cylinder 150 and the auxiliary cylinder 180. Further, the regulating pump 210 is fixedly installed in the detection chamber. The regulating pump 210 has an inlet pipe and an outlet pipe. The inlet pipe of the regulating pump 210 passes through the detection box 130 and the mounting box 110, enabling the regulating pump 210 to extract gas from the external environment. The regulating pump 210 has two outlet pipes. One outlet pipe of the regulating pump 210 is connected to the protective cylinder 150, and the other outlet pipe is connected to the auxiliary cylinder 180. When the regulating pump 210 pumps air outward, it can select one outlet pipe to discharge air, ensuring that the regulating pump 210 supplies gas to the interior of the protective cylinder 150 or the auxiliary cylinder 180.

[0042] In one embodiment, a sealing plate 220 is provided on the water pipe 190, which is used to block the first detection port 120 when the detection box 130 rotates. Specifically, a mounting shaft is fixedly installed on the sealing plate 220. The mounting shaft is rotatably connected to the outer wall of the water pipe 190. By setting the mounting shaft, the sealing plate 220 can block or unblock the first detection port 120. When the volume of the protective cylinder 150 has not increased to a certain extent, the sealing plate 220 is in the state of blocking the first detection port 120. As the volume of the protective cylinder 150 increases, the first side plate 153 of the protective cylinder 150 squeezes the sealing plate 220. When the squeezing force of the first side plate 153 of the protective cylinder 150 on the sealing plate 220 reaches a certain level, the staff drives the sealing plate 220 to unblock the first detection port 120. During the process of the sealing plate 220 unblocking the first detection port 120, the first side plate 153 of the protective cylinder 150 can quickly block the first detection port 120.

[0043] Furthermore, when the detection box 130 needs to be rotated, in order to prevent water inside the water pipe 190 from being discharged through the first detection port 120, the sealing plate 220 is first used to seal the first detection port 120. After the sealing plate 220 completely seals the first detection port 120, the detection box 130 is rotated. After the auxiliary detection port 170 is aligned with the first detection port 120, the regulating pump 210 is used to supply gas into the auxiliary cylinder 180. The second side plate of the auxiliary cylinder 180 squeezes the sealing plate 220. When the squeezing force of the second side plate of the auxiliary cylinder 180 on the sealing plate 220 reaches a certain level, the operator drives the sealing plate 220 to release the seal on the first detection port 120. During the process of the sealing plate 220 releasing the seal on the first detection port 120, the second side plate of the auxiliary cylinder 180 can quickly seal the first detection port 120.

[0044] In one embodiment, a limiting member is provided inside the mounting box 110. The limiting member is used to restrict the rotation of the detection box 130 within the mounting cavity 111. By providing the limiting member, when the positions of the first detection port 120 and the second detection port 140 correspond, or when the positions of the first detection port 120 and the auxiliary detection port 170 correspond, the detection box 130 is in a stable state, preventing water leakage at the first detection port 120 due to shaking of the detection box 130.

[0045] In one embodiment, the limiting component includes a limiting ring 230 and multiple limiting grooves. The multiple limiting grooves are disposed on the peripheral sidewall of the detection box 130. An eccentric shaft is rotatably disposed on the limiting ring 230. The axis of the eccentric shaft is parallel to the axis of the limiting ring 230. The eccentric shaft is fixedly connected to the inner sidewall of the mounting box 110. The limiting ring 230 cannot rotate actively within the detection box 130. A limiting block 240 is disposed on the limiting ring 230. The limiting block 240 can enter the limiting groove. Specifically, when the limiting block 240 on the limiting ring 230 enters the limiting groove, the detection box 130 cannot rotate within the mounting cavity 111. When it is necessary to rotate the detection box 130, the limiting ring 230 is first driven to rotate, so that the limiting block 240 on the limiting ring 230 disengages from the limiting groove. After the limiting block 240 on the limiting ring 230 disengages from the limiting groove, the detection box 130 can rotate within the mounting cavity 111. Furthermore, a rotating handle is provided on the limiting ring 230, which allows the operator to drive the limiting ring 230 to rotate around the eccentric shaft.

[0046] In one embodiment, a sealing ring 250 is provided at the first detection port 120. The sealing ring 250 is made of rubber. When the first side plate 153 or the second side plate deforms to block the first detection port 120, the first side plate 153 or the second side plate can tightly abut against the sealing ring 250, thereby reducing the probability of water inside the water pipe 190 leaking from the first detection port 120. Furthermore, both the first side plate 153 and the second side plate are made of elastic rubber.

[0047] In one embodiment, a buffer airbag 260 is provided inside the detection chamber, and a guide tube 270 is provided on the mounting box 110. One end of the guide tube 270 is blocked by the end of the buffer airbag 260, and the other end of the guide tube 270 is always connected to the inside of the water pipe 190. Specifically, there is always water inside the guide tube 270. When the water pressure inside the water pipe 190 fluctuates, the water pressure inside the guide tube 270 changes synchronously. The water inside the guide tube 270 can squeeze the buffer airbag 260. When the buffer airbag 260 deforms, it can consume the energy of the water pressure in the water pipe 190.

[0048] In one embodiment, two detection boxes 130 are provided in each mounting cavity 111. Within the same mounting cavity 111, the two detection boxes 130 are spaced apart along the extension direction of the water pipe 190. Each detection box 130 contains a protective cylinder 150 and an auxiliary cylinder 180. The four detection boxes 130 in the two mounting cavities 111 are arranged in pairs, and the ultrasonic signals emitted by the ultrasonic sensors 160 all form an angle with the axial direction of the pipe. By providing two detection boxes 130 in each mounting cavity 111, the water flow rate within the same section of the water pipe 190 is detected twice, thereby improving the accuracy of water flow rate detection.

[0049] Furthermore, the ultrasonic sensors 160 located in the same mounting cavity 111 but in different detection boxes 130 can be interchanged. In the direction of water flow, if the water flow affects the ultrasonic sensors 160 inside the protective cylinder 150 or auxiliary cylinder 180, by interchanged, the ultrasonic sensors 160 located in different detection boxes 130 within the same mounting cavity 111 can be made to have roughly the same degree of damage. Therefore, when one ultrasonic sensor 160 is damaged, the other ultrasonic sensors 160 can be replaced at the same time, thereby reducing the frequency of maintenance of the ultrasonic sensors 160.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultrasonic water meter with leakage detection function, characterized in that, include: The installation box is fitted on the outside of the water pipe. The inside of the installation box is hollow, and the water pipe can divide the inside of the installation box into two relatively isolated installation cavities. The water pipe is provided with two first detection ports that connect the inside of the water pipe and the two installation cavities. Each first detection port connects one installation cavity to the water pipe. In the direction of water flow inside the water pipe, there is a preset distance between the two first detection ports. The testing box is provided in two parts, with each testing box set inside a mounting cavity; the testing box has a testing cavity inside, and a second testing port is provided on the side wall of the testing box to connect the testing cavity and the mounting cavity, and the second testing port is set to correspond to the first testing port; A protective cylinder is installed in the detection chamber. The protective cylinder includes a first end cap, a second end cap, and a first side plate. The second end cap is fixedly connected to the inner side wall of the detection chamber. The first side plate is fixedly connected to the first end cap and rotatably connected to the second end cap. An ultrasonic sensor is installed on the second end cap and located inside the protective cylinder. The first end cap and the second end cap are spaced apart vertically. The second end cap is located below the first end cap and is detachably installed on the lower end face inside the detection chamber to ensure that the position of the first side plate in contact with the water flow inside the water pipe can be changed. The first side plate is made of an elastic and deformable material. When the air pressure inside the protective cylinder increases, the first side plate can deform to block the first detection port through the second detection port. The side wall of the test box is provided with an auxiliary test port that connects the test chamber and the installation chamber. The test box is rotatably mounted in the installation chamber. An auxiliary cylinder is installed inside the test chamber. The side wall of the auxiliary cylinder can deform. When the ultrasonic sensor inside the protective cylinder malfunctions, the test box rotates by a preset angle, and the auxiliary test port on the test box can correspond to the first test port. A regulating pump is installed inside the detection chamber to adjust the air pressure inside the protective cylinder and the auxiliary cylinder; A sealing plate is installed on the water pipe, which is used to block the first detection port when the detection box rotates; The mounting box is equipped with a limiting component to restrict the rotation of the testing box within the mounting cavity. The limiting component includes a limiting ring and multiple limiting grooves. The multiple limiting grooves are located on the peripheral sidewall of the testing box. An eccentric shaft is rotatably mounted on the limiting ring, with the axis of the eccentric shaft parallel to the axis of the limiting ring. The eccentric shaft is fixedly connected to the inner sidewall of the mounting box. A limiting block is provided on the limiting ring, which can enter the limiting groove to prevent water leakage at the first testing port due to shaking of the testing box.

2. An ultrasonic water meter with leakage detection function according to claim 1, characterized in that: The auxiliary cylinder includes a third end cap, a fourth end cap, and a second side plate. The fourth end cap is fixedly connected to the inner side wall of the detection chamber. The second side plate is fixedly connected to the third end cap and rotatably connected to the fourth end cap. The ultrasonic sensor is installed on the fourth end cap. The second side plate is made of an elastic and deformable material.

3. An ultrasonic water meter with leakage detection function according to claim 1, characterized in that: A sealing ring is installed at the first detection port.

4. An ultrasonic water meter with leakage detection function according to claim 1, characterized in that: The detection chamber is equipped with a buffer airbag, and the installation box is equipped with a guide tube. One end of the guide tube is in contact with the buffer airbag, and the guide tube is always connected to the inside of the water pipe.

Images